Removable brass for locomotive-boxings and locking means therefor



J. P. FINERTY AND F. CROGHAN.

REMOVABLE BRASS FOR LOCOMOTIVE BOXINGS AND LOCKING MEANS THEREFOR. APPLICATION FILED NOV. 6, 1919.

1,35 ,30 Patented Nov. 9,1920.

2 SHEETS-SHEET I.

1. P. FINERTY AND F. CROGHAN REMOVABLE BRASS FOR LOCOMOTIVE BOXINGS AND LOCKING MEANS THEREFOR.

APPLICATION FILED NOV. 6, I919.

Pdtented Nov. 9, 1920.

2 SHEETS-SHEET 2.

I I III-|-.-| Lil.

a Moe/14%;;

UNITED STATES JAMES P. FIN'ERTY, OF DUNMORE,

PATENT OFFICE.

AND FRANCIS CROGHAN, OF SCRANTON, PENN- SYL'VANIA.

Specification of Letter! men.

Patented Nov. 9, 1920.

Application filed November 6, 1919. Serial No. 336,087.

- To all whom it may concern:

Be it known that we, JAMES P. FINERTY and FnANois CROGHAN, citizens of the United States, residing at Dunmore and Scranton, res ectivel in the county of Lackawanna, tate of l ennsylvania, have inventeda new and useful Removable Brass for Locomotive-Boxings and Looking Means Therefor; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to removable brasses for locomotive boxings and locking means therefor, and hasfor its object to provide a removable brass, which brass may be easily and quickly placed within the boxing and locked in place therein, by means of segmentally shaped locking rings having their peripheral edges disposed in a channel eccentric to the axis of the axle and consequen tly eccentric to the concave bearing surface of the brass. The thickness of the abutting ends of the segmental locking rings being greater than the horizontal width of said locking rings at their ends which are disposed substantially in alinement with the axis of the axle, thereby forming means whereby as the axle revolves any tendency to rotate with the axle Will be prevented bythejamming action' of the narrow portions of the crown brass and the segmental sections of the liner, this for the reason that the width of the segmental liner sections and the lower ends of the brass increase and taper to their maximum width at their upper sides.

The present practice is to cast crown brasses with flanges then drill holes through said flanges after placing the liner or crown brass within the boxing, in which holes a multiplicity of bolts are threaded. After the crown brass is so secured within the boxing its bearing surface is machined and the boxing again placed on. the engine. It has been found that to renew a crown brass of this type the time required would amount to anywhere from one to two hours per liner, and when it is considered that there are as many liners or boxings as driving wheels on engines, some engines having four, there being as many as sixteen in some engines,

it will be seen that if an enginehas sixteen bearings that engine would be laid up and out of service thirty-two hours. Also under the present practice considerable material is consumed, for the reason that the crown brass and liner where the same are cast together are poured under what is lmown as the poured system, and after the 'same are poured integrally with each other for the reason that the castings fora con-' siderable depth are faulty and have flaws incident to casting. In those forms wherein the liners are cast and bolted on the boxing by many bolts the present invention eliminates the necessity of boring, threading, or tapping, many holes and counter-- sinking said holes for the reception of numerous bolts. Therefore the present invention saves the cost of bolts, the present practice of redrilling the holes and remachining bolts, also the drilling and countersinking of the liner which is necessary where liners are being replaced with new liners.

A further object is to provide a crown brass for the boxing, which crown brass is segmentally shaped and has its outer. face eccentric to its concave face, said crown brass being pressed into the boxing and into segmentally shaped members forming a liner. The segmentally sha ed members forming. the liner are dispose in an arcu ate beveled channel of the boxing, which beveled channel is eccentric to the center of the crown brass bearing, eccentric to the outer periphery of the crown brass and eccentric to the axis of the axle.

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawings. described and claimed, it being understood that changes in the precise embodiment of the invention Fig. 3 is a side elevation of one ofthe segmental sections of the liner, showing its beveled flange for engaging a beveled channel in the face of the boxing.

Referring to the drawings, the numeralfifi designates the conventional form. of engine-- boxing and 2 a liner carried in one face of the boxing 1. The liner 2 comprises segmental sections 2 and 2", which sections have their ends2 in abutting engagement with each other thereby forming a semicircular liner having its side end open so that an axle may be received within the arch of the boxing and within the liner. The ends 29 of the segmental sections 2 and -2 are wider than the ends 2, the purpose of which will presently appear. Liner 2 as a Whole has a beveled engagement with a bevel channel 3 on the outer face of the boxing, the radius of said channel beingindicated by the radius line 0? shown in Fig. 1. The segmental sections 2 and 2 of the liner are provided with apertures 5, through which apertures pins may beplaced which pins would-engage holes in the boxing so that the liner as a whole may be held in position while the same is being machined. The inner periphery of the segmental sections 2 and 2 are eccentric to the radius 03 and are concentric with theradius c as indicated in Fig. 1, therefore it will be seen that when the crown brass 4 is pressed longitudinally into the boxing, the flange 5 thereof will engage the inner eriphery of the liner sections 2 and 2*, said crown brass will be prevented from longitudinal movement in the direction of the arrow 6, Fig. 2, by means of the flange 5 engaging the marginal edge 6 of the arch of the boxing. Crown brass is forced into position under considerable pressure so that the same will be securely held therein and prevented from, working loose. The lower ends or edges of the crown brass 4 engage shoulders 7, which extend transversely through the arch of the boxing, therefore it will be seen that the crown brass is securely held within the arch of said boxing. After the crown brass has been forced into positionand the liner as a whole securely held in position by said crown brass the inner periphery of the crown brass is machined to the proper diameter as indicated by the radius line a shown in Fig. 1. The crown brass having been machined the boxing as a whole is then ready to be replaced on an engine. When it is necessary to-remove the liner sections 2 and 2*, all that-is necessary to be done is for the boxing to be removed from the engine and oil of the axle 8, after which pressure is applied to the end 9 of the crown brass and the brass forced outwardly from the arch of the boxing in the direction of the-arrow 7. After the crown brass has been forcedout of the boxing it will be seen that the segmental sections 2 and 2 which form the liner 2 will drop out of position within the bevel channel 3. It will be seen that it will only require a few minutes to press the crown brass out of the boxing and allow the sections of the liner 2 to drop out of the bevel channel 3 in the face of the boxing.

.This operation in the conventional form of crown brass and liners now in use would require at least an hours time.

The invention having been set forth what is claimed as new and useful is 1. The combination with an engine box ing having an arch therein, of a crown brass disposed in the upper end of said arch, the outer periphery of said crown brass being provided with a flange for limiting the inward movement of the same when pressed into place, a liner ring formed in sections and disposed in a recess in the face of the boxing,'the radius of the inner periphcry of the liner being eccentric to the radius of,the inner periphery of the crown brass and in engagement with the crown brass flange, the outerperiphery of the liner being eccentric to the outer periphery of the crown brass flange, said liner being entirely maintained and held in the recess by means of the crown brass'flange.

2. The combination with a boxing having an arch therein, of a crownbrass disposed in the upper end of said arch, an arcuate' JAMES P. FINER Y. FRANCIS oaoen N. 

